CN213572099U

CN213572099U - Skid-steer loader

Info

Publication number: CN213572099U
Application number: CN202021559598.5U
Authority: CN
Inventors: 魏勋利; 沈勇; 宋红兵; 许�鹏; 李志刚
Original assignee: Science and Technology Branch of XCMG
Current assignee: Science and Technology Branch of XCMG
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-06-29
Anticipated expiration: 2030-07-31

Abstract

The utility model relates to a skid-steer loader, include: the frame comprises a chassis and a bearing part arranged above the chassis; a cab mounted on the chassis and located in front of the carrying part; a boom including a front end located in front of the cab and a rear end located at a rear of the frame; the rear connecting rod comprises a first end hinged with the bearing part and a second end hinged with the movable arm; the front connecting rod comprises a first end hinged with the bearing part and a second end hinged with the movable arm; and the hydraulic cylinder comprises a first end hinged with the bearing part and a second end hinged with the movable arm so as to drive the front end of the movable arm to switch between a low position and a high position, wherein the bearing part is positioned below the rear window of the cab or positioned at the side part of the rear window. Use the technical scheme of the utility model, bear the weight of the below that the position is located the rear window of driver's cabin or be located the lateral part of rear window to the poor problem in rear view field of vision of the skid steer loader who exists among the correlation technique has been improved.

Description

Skid-steer loader

Technical Field

The utility model relates to an engineering machine tool field particularly, relates to a skid-steer loader.

Background

The skid steer loader is wheel type special chassis equipment for realizing vehicle steering by utilizing linear velocity difference of wheels at two sides, and is mainly used for occasions with narrow operation field, uneven ground and frequent operation content change.

A lifting mechanism for lifting a bucket of a traditional skid steer loader is in radial lifting, specifically, the rear end of a movable arm is hinged with a frame, and the bucket is connected to the front end of the movable arm. Under the action of the driving oil cylinder, the front end of the movable arm moves around an arc taking a hinged point of the movable arm and the frame as a circle center, the front end of the movable arm extends forwards in the horizontal direction and then moves backwards, and the lifting mechanism has the defects of low lifting capacity and small lifting height. For improving above-mentioned problem, the mainstream producer utility model that slides has vertically lifted equipment, through complicated link mechanism design promptly, realizes that the movable arm front end is lifting the in-process and is being close perpendicular trajectory, promotes and lifts the height, increases rated load capacity.

The related art has already existed a skid steer loader with a vertical lifting device mechanism, but the related art skid steer loader with the vertical lifting device mechanism has a problem of poor driver's rear view, i.e. the lifting mechanism is between the upper rear part of the frame and the rear part of the cab, which has a large influence on the driver's rear view. The multifunctional body of the skid steer loader is that different machines can be easily hung at the front end of the skid steer loader to work, but part of common machines and tools need to work under the condition that the skid steer loader is reversed, such as a closed type sweeper, a ditcher and the like. When the skid steer loader works backwards, a driver needs to observe the view of the rear part of the whole machine through a rear window of a cab at any time. Therefore, the existing vertical lifting working device of the skid steer loader is generally higher in rear structural design, larger in shielding view field of a rear window of a driver, large in view field blind area and larger in danger in the process of backing operation.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a skid-steer loader to there is the not good problem in the back vision field of skid-steer loader in improving the correlation technique.

According to an aspect of the embodiment of the utility model, a skid steer loader is provided, the skid steer loader includes:

the frame comprises a chassis and a bearing part arranged above the chassis;

a cab mounted on the chassis and located in front of the carrying part;

a boom including a front end located in front of the cab and a rear end located at a rear of the frame;

the rear connecting rod comprises a first end of the rear connecting rod hinged with the bearing part and a second end of the rear connecting rod hinged with the movable arm;

the front connecting rod comprises a first end of the front connecting rod hinged with the bearing part and a second end of the front connecting rod hinged with the movable arm;

a hydraulic cylinder which comprises a first end of the hydraulic cylinder hinged with the bearing part and a second end of the hydraulic cylinder hinged with the movable arm so as to drive the front end of the movable arm to switch between a low position and a high position,

wherein, the bearing part is positioned below the rear window of the cab or positioned at the side part of the rear window.

In some embodiments, the load bearing portion comprises:

the upper end of the first bearing part and the first end of the rear connecting rod are hinged to a first hinge point, and the first bearing part is lower than a rear window of the cab; and/or

The upper end of the second bearing part is hinged to a second hinged point with the first end of the front connecting rod, and the second bearing part is located on the side of a rear window of the cab.

In some embodiments, the second carrier portion is located forward of the first carrier portion and adjacent to a rear wall of the cab.

In some embodiments, the second carrier is connected to a rear wall of the cab.

In some embodiments, the boom includes:

a first hinge part hinged with the second end of the rear connecting rod;

the second hinge part is hinged with the second end of the front connecting rod;

a third hinge part hinged with the second end of the hydraulic cylinder,

wherein the first, second and third hinges are arranged side by side on the boom.

In some embodiments, the first hinge, the second hinge, and the third hinge are arranged sequentially from back to front.

In some embodiments of the present invention, the,

when the front end of the movable arm is at a low position, the second hinge joint is positioned between a first hinge point of the first end of the rear connecting rod and the bearing part and a second hinge point of the first end of the front connecting rod and the bearing part in the horizontal and/or vertical direction.

In some embodiments, the second hinge portion is located below a line connecting the first hinge portion and a second hinge point of the first end of the front link and the carrier portion when the front end of the boom is in the low position.

In some embodiments of the present invention, the,

when the front end of the movable arm is at a low position, the second end of the rear connecting rod is positioned at the rear upper part of the first end of the rear connecting rod;

when the front end of the movable arm is at a low position, the second end of the front connecting rod is positioned behind and below the first end of the front connecting rod.

In some embodiments of the present invention, the,

when the front end of the movable arm is in a high position, the second end of the rear connecting rod is positioned at the rear upper part of the first end of the rear connecting rod;

when the front end of the boom is in the high position, the second end of the front link is located above and behind the first end of the front link.

In some embodiments, the third hinge point of the first end of the hydraulic cylinder and the carrier is located behind and below the first hinge point of the first end of the rear link and the carrier.

In some embodiments, the first hinge point of the first end of the rear link and the load-bearing portion is located behind and below the second hinge point of the first end of the front link and the load-bearing portion.

In some embodiments, the boom includes:

two arms respectively located on both sides of the cab;

a first cross member connected to front ends of the two arms;

and the pedal is arranged on the first cross beam.

In some embodiments, during the movement of the front end of the boom from the first position to the second position, the rear link moves first counterclockwise and then clockwise, and the front link moves clockwise all the time.

Use the technical scheme of the utility model, bear the weight of the below that the position is located the rear window of driver's cabin or be located the lateral part of rear window to the poor problem in rear view field of vision of the skid steer loader who exists among the correlation technique has been improved.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 shows a schematic perspective view of a skid steer loader of an embodiment of the present invention;

fig. 2 shows a schematic structural view of a skid steer loader according to an embodiment of the present invention when the front end of the boom is at a low position;

fig. 3 shows a schematic structural view of a front end of a boom of a skid steer loader according to an embodiment of the present invention in a high position;

FIG. 4 shows a schematic structural view of a rear link of a skid steer loader of an embodiment of the present invention;

FIG. 5 shows a schematic structural view of a front link of a skid steer loader of an embodiment of the present invention;

FIG. 6 shows a schematic structural view of a boom of a skid steer loader of an embodiment of the present invention;

fig. 7 shows a view schematic of a rear window of a cab of a skid steer loader of an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Fig. 1 shows a schematic perspective view of a skid steer loader according to an embodiment of the present invention, and as shown in fig. 1, the skid steer loader according to the embodiment includes a frame 5, a cab 6, a movable arm 3, a rear link 1, a front link 2, and a hydraulic cylinder 4.

The frame 5 comprises a chassis and a bearing part arranged above the chassis; the cab 6 is arranged on the chassis and is positioned in front of the bearing part; boom 3 includes a front end 34 located forward of cab 6 and a rear end located rearward of frame 5; the rear connecting rod 1 comprises a first rear connecting rod end 11 hinged with the bearing part and a second rear connecting rod end 12 hinged with the movable arm 3; the front connecting rod 2 comprises a front connecting rod first end 21 hinged with the bearing part and a front connecting rod second end 22 hinged with the movable arm 3; the hydraulic cylinder 4 comprises a first cylinder end 41 articulated to the carrier and a second cylinder end 42 articulated to the boom 3 to drive the front end 34 of the boom 3 to switch between the low position and the high position.

As shown in fig. 7, the load-bearing portion is located below the rear window 61 of the cab 6 or at a side portion of the rear window 61, thereby improving the problem of poor rear view of the skid steer loader as in the related art.

In the present embodiment, the boom 3 and the frame 5 are connected by a link mechanism, and during the lifting of the boom 3, the trajectory line 7 of the front end 34 of the boom 3 is substantially vertically linear.

In the process that the front end 34 of the movable arm 3 moves from the first position to the second position, the rear connecting rod 1 moves counterclockwise and then moves clockwise, and the front connecting rod 2 always moves clockwise.

The bearing part comprises a first bearing part and a second bearing part, the upper end of the first bearing part and the first end 11 of the rear connecting rod 1 are hinged to a first hinge point 51, and the first bearing part is lower than a rear window 61 of the cab 6; the upper end of the second bearing part is hinged to the second hinge point 52 with the front link first end 21 of the front link 2, and the second bearing part is located at the side of the rear window 61 of the cab 6.

The second bearing portion is located in front of the first bearing portion and adjacent to the rear wall of the cab 6. The second bearing part can play a role in protecting the rear window of the cab 6, so that the cab 6 can be prevented from being seriously deformed under severe dangerous conditions such as overturning and the like, and a user can be helped to escape from the rear window 61.

In some embodiments, the second bearing portion is higher than the first bearing portion. In some embodiments, the second carrier is connected to a rear wall of the cab 6.

As shown in fig. 1 to 6, the boom 31 includes a first hinge 31, a second hinge 32, and a third hinge 33. The first hinge portion 31 is hinged with the rear link second end 12 of the rear link 1; the second hinge portion 32 is hinged to the front link second end 22 of the front link 2; the third articulation 33 is articulated to the cylinder second end 42 of the cylinder 4. Wherein the first hinge 31, the second hinge 32 and the third hinge 33 are arranged side by side on the boom 3.

The first hinge 31, the second hinge 32 and the third hinge 33 are arranged in sequence from back to front.

As shown in fig. 1 and 2, when the front end 34 of the boom 3 is in the low position, the second hinge portion 32 is located between the first hinge point 51 of the rear link first end 11 of the rear link 1 and the bearing portion and the second hinge point 52 of the front link first end 21 of the front link 2 and the bearing portion in the horizontal direction and the vertical direction.

When the front end 34 of the boom 3 is in the low position, the second hinge portion 32 is located below a line connecting the first hinge portion 31 and the front link first end 21 of the front link 2 with the second hinge point 52 of the bearing portion.

When the front end 34 of the boom 3 is at the low position, the rear link second end 12 of the rear link 1 is located above and behind the rear link first end 11 of the rear link 1; when the front end 34 of the boom 3 is in the low position, the front link second end 22 of the front link 2 is located rearward and below the front link first end 21 of the front link 2.

As shown in fig. 3, when the front end 34 of the boom 3 is in the high position, the rear link second end 12 of the rear link 1 is located above and rearward of the rear link first end 11 of the rear link 1; when the front end 34 of the boom 3 is in the high position, the front link second end 22 of the front link 2 is located rearward and above the front link first end 21 of the front link 2.

The third hinge point 53 of the first end of the hydraulic cylinder 4 and the carrier part is located behind and below the first hinge point 51 of the first end 11 of the rear link 1 and the carrier part.

The first hinge point 51 of the first end 11 of the rear link 1 and the bearing part is located behind the second hinge point 52 of the first end 21 of the front link 2 and the bearing part, and the first hinge point 51 is lower than the second hinge point 52 or is flush with the second hinge point 52.

As shown in fig. 6, the boom 3 includes two arms, a first cross member 35, and a pedal 36. The two arms are respectively positioned on two sides of the cab 6; a first cross member 35 is connected to the front ends of the two arms; the pedal 36 is mounted on the first cross member 35.

When the front end 34 of the boom 3 is lifted from the low position to the high position by the hydraulic cylinder 4, the rear link 1 moves clockwise after counterclockwise for a short time, and the front link 2 moves clockwise.

When the front end 34 of the movable arm 3 is at a low position, the rear link second end 12 of the rear link 1 is positioned at the rear upper part of the rear link first end 11 of the rear link 1, so that the front end 34 of the movable arm 3 firstly extends forwards when lifting starts, and then rises approximately vertically, and stability of low-position transportation is facilitated.

The rear link 1 includes two rod-like members at both ends in the width direction of the skid steer loader and a second cross member 14 connecting the two rod-like members for connecting the rear link-related structures at both sides of the longitudinal center. The front end of the movable arm 3 is provided with a second cross beam 35, and the rear connecting rod 1 and the cross beam on the movable arm 3 can well reduce the deviation of the movable arm when the movable arm is stressed laterally, so that the structural strength is enhanced. The cross beam 35 is provided with a pedal 36, which is convenient for a driver to step on from the front door to enter the cab.

As shown in fig. 1 to 3, the skid steer loader further includes a bucket rotatably mounted at a front end of the boom 3 and a hydraulic cylinder for driving the bucket to rotate with respect to the boom 3.

The above description is only exemplary embodiments of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A skid steer loader, comprising:

a frame (5) comprising a chassis and a bearing part arranged above the chassis;

a cab (6) mounted on the chassis and located in front of the carrier;

a boom (3) including a front end (34) located forward of the cab (6) and a rear end located rearward of the frame (5);

a rear connecting rod (1) comprising a first rear connecting rod end (11) hinged to the carrying part and a second rear connecting rod end (12) hinged to the movable arm (3);

a front connecting rod (2) comprising a front connecting rod first end (21) hinged with the bearing part and a front connecting rod second end (22) hinged with the movable arm (3);

a hydraulic cylinder (4) comprising a first hydraulic cylinder end (41) articulated with the carrying part and a second hydraulic cylinder end (42) articulated with the boom (3) to drive the front end (34) of the boom (3) to switch between a low position and a high position,

wherein the carrier is located below a rear window (61) of the cab (6) or at a side of the rear window (61).

2. The skid steer loader of claim 1, wherein said load bearing portion comprises:

the upper end of the first bearing part and the first end (11) of the rear connecting rod (1) are hinged to a first hinge point (51), and the first bearing part is lower than a rear window (61) of the cab (6); and/or

The upper end of the second bearing part and the first end (21) of the front connecting rod (2) are hinged to a second hinge point (52), and the second bearing part is located on the side of a rear window (61) of the cab (6).

3. The skid steer loader of claim 2, wherein the second carrier is forward of the first carrier and adjacent a rear wall of the cab (6).

4. A skid steer loader according to claim 3, wherein said second carrier is connected to a rear wall of said cab (6).

5. The skid steer loader of claim 1, wherein the boom (3) comprises:

a first articulation (31) articulated to a rear link second end (12) of the rear link (1);

a second articulation (32) articulated to the front link second end (22) of the front link (2);

a third articulation (33) articulated to the second hydraulic cylinder end (42) of the hydraulic cylinder (4),

wherein the first articulation (31), the second articulation (32) and the third articulation (33) are arranged side by side on the boom (3).

6. The skid steer loader of claim 5, wherein the first hinge (31), the second hinge (32), and the third hinge (33) are arranged sequentially from rear to front.

7. The skid steer loader of claim 5,

when the front end (34) of the movable arm (3) is at a low position, the second hinge part (32) is located between a first hinge point (51) of the rear link first end (11) of the rear link (1) and the bearing part and a second hinge point (52) of the front link first end (21) of the front link (2) and the bearing part in the horizontal and/or vertical direction.

8. The skid steer loader of claim 5, wherein the second hinge (32) is located below a line connecting the first hinge (31) and the forward link first end (21) of the forward link (2) to the second hinge point (52) of the carrier when the forward end (34) of the boom (3) is in the lowered position.

9. The skid steer loader of claim 1,

when the front end (34) of the movable arm (3) is at a low position, the rear link second end (12) of the rear link (1) is positioned at the rear upper part of the rear link first end (11) of the rear link (1);

when the front end (34) of the movable arm (3) is at a low position, the front link second end (22) of the front link (2) is positioned behind and below the front link first end (21) of the front link (2).

10. The skid steer loader of claim 1,

when the front end (34) of the movable arm (3) is at a high position, the rear link second end (12) of the rear link (1) is positioned at the rear upper part of the rear link first end (11) of the rear link (1);

when the front end (34) of the movable arm (3) is at a high position, the front link second end (22) of the front link (2) is positioned at the rear upper part of the front link first end (21) of the front link (2).

11. The skid steer loader of claim 1, wherein a third hinge point (53) of the hydraulic cylinder first end (41) of the hydraulic cylinder (4) and the load bearing portion is located rearwardly below a first hinge point (51) of the rear link first end (11) of the rear link (1) and the load bearing portion.

12. The skid steer loader of claim 1, wherein a first hinge point (51) of a rear link first end (11) of the rear link (1) and the load bearing portion is located rearwardly below a second hinge point (52) of a front link first end (21) of the front link (2) and the load bearing portion.

13. The skid steer loader of claim 1, wherein the boom (3) comprises:

two arms located on either side of the cab (6);

a first cross member (35) connected to the front ends of the two arms;

a pedal (36) mounted on the first cross member (35).

14. The skid steer loader of claim 1, wherein during the movement of the front end (34) of the boom (3) from the first position to the second position, the rear link (1) moves first counterclockwise and then clockwise, and the front link (2) moves clockwise.